Method cacheSections

qrenderdoc/Widgets/Extended/RDHeaderView.cpp:118–191

}

void RDHeaderView::cacheSections()
{
  if(m_suppressSectionCache)
    return;

  QAbstractItemModel *m = this->model();

  if(!m)
    return;

  int oldCount = m_sections.count();
  m_sections.resize(m->columnCount());

  // give new sections a default minimum size
  for(int col = oldCount; col < m_sections.count(); col++)
    m_sections[col].size = 10;

  for(int col = 0; col < m_sections.count(); col++)
  {
    if(m_columnGroupRole > 0)
    {
      QVariant v = m->data(m->index(0, col), m_columnGroupRole);
      if(v.isValid())
        m_sections[col].group = v.toInt();
      else
        m_sections[col].group = -m_columnGroupRole - col;

      if(col > 0)
      {
        m_sections[col - 1].groupGap =
            (m_sections[col].group != m_sections[col - 1].group) && m_sections[col].group >= 0;
      }
    }
    else
    {
      m_sections[col].group = col;
      m_sections[col].groupGap = true;
    }
  }

  int accum = 0;

  for(int col = 0; col < m_sections.count(); col++)
  {
    if(col == m_pinnedColumns)
      m_pinnedWidth = accum;

    m_sections[col].offset = accum;
    accum += m_sections[col].size;

    if(hasGroupGap(col))
      accum += groupGapSize();
  }

  if(m_pinnedColumns >= m_sections.count())
    m_pinnedWidth = m_pinnedColumns;

  QHeaderView::initializeSections();